a) (441,77)=1 (F)
441=3²×7²
77=7×11
(441,77)=7
b) (150,405)=1 (F)
150=5²×2×3
405=3⁴×5
(150,405)=5×3=15
c) (32,25)=1 (A)
32=2⁵
25=5²
(32,25)=1
d) (775,105)=1 (F)
775=5²×31
105=5×3×7
(775,105)=5
e) (98,39)=1 (A)
98=7²×2
39=3×13
(98,39)=1
f) (48,245)=1 (A)
48=2⁴×3
245=7²×5
(48,245)=1
